Color Grades: Origin and Nomenclatures
RAL, GIA, CIBJO, IDC, Scan D.N ...
Diamond Color Grades
Diamond Color: What are the different color grades and what do they mean?
Color Grade D
D is the highest color grade and is reserved for a truly colorless diamond. It is completely colorless to the naked eye and much sought after because it is so rare.
Color Grade E ...
COLOR GRADE - One of the four value factors of a diamond. Diamonds are ranked on a scale from "D" (colorless) to "Z" (noticeable tint of color, typically yellow or brown).
Color Grade: The assessment of absence of color from colorless to light yellow or brown when compared to GIA Master Color Comparison Diamonds.
Color grade: The relative position of a diamond's body color on a colorless (starting with D) to yellow (Z) scale.
What Color Grade Should I Choose?
Zoara suggests that you do some window shopping for certified diamonds, take a look at diamonds of all color grades and compare and contrast.
Which Color Grade Should I Choose?
Diamonds graded D through F are naturally the most valuable and desirable because of their rarity. Such diamonds are a treat for the eyes of anyone.
Color grade
Clarity grade
Carat weight
Cut quality (Note: not all reports grade cut)
An evaluation of the diamond's symmetry and polish
It also may comment on the diamond's fluorescence, girdle and culet, which also affect its value ...
COLOR GRADE A category used to describe the amount or absence of color, typically yellow, within a Diamond or other gemstone. A color grade describes the body color of a Diamond and not the colors that can be seen coming from a Diamond. The G.I.A.
The color grades of D, E and F are the rarest and most colorless. The gradations in color can only be seen by an expert gemologist.
GIA Color Grade: Fancy Deep blue-green
Weight: 5.51 carats
Owner: Cora Diamond Corporation
By virtue of its color alone, the Ocean Dream, found in central Africa, is one of the very rarest diamonds known to man.
Diamond color grade assesses the absence of color. Diamond color is graded on a scale from D through Z, with D, E and F regarded as colorless.
Specific color grades of blue sapphire are commonly refers to as: Ceylon Blue, Cornflower Blue, Electric Blue, Kashmir Blue, Royal Blue, Sky Blue, Velvet Blue, and Violet Blue.
Improving color grade of a diamond by application of coating techniques resulting from WOII research: Vaccuum sputtering of Fluorides on pavilion or girdle
first lab alert 1952 ...
A diamond color grade that is used by some dealers for a stone showing an obvious yellow tint to the unaided eye.
Solitaire
A term used to refer to a ring containing a single diamond or other gem.
3 Different Color Grades?
What Diamond Color will you get? J? K? L? That's a big difference in Color and Hue. Take a look at the Diamond Color Chart below. You'll see J is NOT in the same boat as K and L.
Diamonds with a color grade of D, E or F are considered colorless; G, H, I and J are near colorless; K, L and M have a faint yellow tint; N, O, P, Q and R have a very light yellow tint and S, T, U, V, W, X, Y and Z are light yellow.
fancy color A color grade falling outside or beyond the D-Z range. Some of these colors can be extremely valuable especially when they are considered intense or vivid.
In that regard, the color grade of a diamond is a measurement of rarity. Rarity is directly linked to value. Just as with clarity, a color grade cannot determine the beauty of a diamond.
color grades together into a single class. Lower grade stones can be sold at higher grade prices this way.
Cape - (a) A broad range of diamond color grades that show a distinct yellow tint face up (except for small stones in the top part of the range).
Diamond Color: The highest color grade of diamond is completely clear--that is, colorless, or white. At the other extreme, a diamond can be totally black and opaque.
Depending on the stone's size, a single increase in color grade can boost the value of a diamond by thousands of dollars per carat. A traditional engagement diamond is usually colorless or near-colorless.
With our terminology at hand, we can now look at the interaction between clarity and color grades with respect to the pricing and the overall beauty of the diamond.
A master stone set is used to determine color grade
Next, the diamond's color is compared to a set of master stones. The master stone set is a row of stones laid out from D to Z, representing the standard for each color grade.
Effect of color on price: In general, as the amount of yellow in the stone increases, the value of a diamond decreases, that is until the fancy color grades are reached, and then the value goes up again.
Even though stones in the D-F color grades are the most valuable, you can still obtain great value (and save considerable money) with diamonds graded G-H, since no color is visible to the untrained eye.
The great rarity of this material and its popularity with collectors means that almost any sized piece in any clarity and color grade can find a ready buyer.
The absence of color makes the diamond more valuable and its price changes significantly with each color grade.
Clarity - It is the clearness or purity of a diamond. It defines the presence or absence of the diamond's internal flaws.
Below is a suite of Tanzanite loosely representing the color grades as they descend. We have used the GIA system but included some of the other trade grades often used to help with comparison purposes.
In very rare cases though, strong fluorescence in a high color grade diamond may make the diamond appear foggy or oily.
A ‘D' color is the top color grade (colorless) and a ‘Z' - would mean that stone has a noticeable tint of color, typically yellow.
D: Absolutely colorless. The highest color grade, which is extremely rare.
E: Colorless. Only minute traces of color can be detected by an expert gemologist. A rare diamond.
Diamonds that fall in the K-M color grade range have a faint yellow tint. Diamonds in the N-R range have a very light yellow tint and S-Z are light yellow.
In the United States and around the world colorless diamonds are graded on an alphabetical scale, introduced by the Gemological Institute of America (GIA). "Colorless" or "rare white" diamonds are of color grades D, E and F.
A set of color comparison diamonds that defines diamond color grades in the normal (D-to-Z) range.
Near Colorless
A general term for diamonds in the G-to-J color range.
It is a Diamond with intense body color which is other than transparent stone with low color grade. Colored or fancy diamonds are very rare and valuable. Fancy diamonds are available in various colors like blue, pink, purple, red etc.
Fire ...
Like many of the fancy shaped diamonds with corners, Marquise diamonds with a borderline near colorless color grade may exhibit a slight yellow tint in the corners of the gem.
Return from Marquise Diamonds page to Loose Diamonds page ...
The diamond certificate records all the relevant information pertaining to the diamond, including carat weight, color grade, clarity grade, measurements and physical properties as well as plotting diagrams.
E.G.L - History ...
Quality - The quality elements include Carat Weight, Size, symmetry and proportions, Clarity Grade, Color Grade and Fluorescence.
Diamond Quality
Red Diamonds ...
master stone Stone of a known color and quality used for comparing other gems of the same species or variety; also a diamond of known color grade used to determine the grade of other diamonds.
The Persians preferred sky blue turquoise and as a result, the term “Persian turquoise' is sometimes incorrectly used as a color grade, not as a geographical indicator.
Centenery Diamond is the world's third-largest, modern-cut perfect diamond that possesses 599.10 carats in rough form. The Gemological Institute of America has certified Centenary Diamond with a color grade as D color.
The emerald cut is seldom used for diamonds in the intermediate color grades, since it tends to emphasize color. It is excellent, however, for colorless stones and when it is desirable to emphasize the color of fancy colors.
was expected to bring up to $13-million when it was auctioned by Sotheby's in April, 2008. It was pulled from the auction when bids didn't meet the diamond's reserve. It's reported that Sotheby's has a private buyer for the rare, D color grade ...
Color is graded on a normal diamond color scale. When buying a quality diamond, it is important to find a good color grade. Perhaps when buying a diamond, a buyer should familiarize him or herself with the diamond color grading scale.
Moreover, this fluorescence, generally blue, tends to mask under sunlight the real color of the diamond (generally yellow or brown) and therefore falsify the color grade.
When viewed in the face-up position, the average person begins to see color in a diamond at about the I-J range. Therefore color is a rarity factor that does affect appearance, rarity and price, about 10-15% per color grade ...
a gem), which are designed to better the gemological characteristics of the stone in one or more ways. These include laser drilling to remove inclusions, application of sealants to fill cracks, treatments to improve a white diamond's color grade, ...
 See also: Color, Diamond, Stone, Jewel, Clarity
  
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